Well the tip i can give you is just to moisturize your mouth often, coconut oil, shea butter, or even just some product that you aren't allergic to.
Do not peel your lips, it makes it worse.
You shouldn't feel suicidal though, yours is really not that bad. You should be glad it is only 1 lip and not both. I have cheilitis on and around my mouth and boy do i look like a clown when i go out (its all red and flaking)
Drink lots of water, eat a healthy diet. Those hasn't worked very well for me but i hope it works well for you.